| A corps of yeomanry gunners in Ireland 1805-06 : the Loughlinstown gunners | Kerrigan, P. M. | Article in Journal | | 1983 |
| A military map of Ireland of the late 1790s | Kerrigan, P. M. | Article in Journal | | 1975 |
| Garrisons and barracks in the Irish midlands, 1704-1828 | Kerrigan, P. M. | Article in Journal | | 1985 |
| Seventeenth-century fortifications, forts and garrisons in Ireland : a preliminary list | Kerrigan, P. M. | Article in Journal | | 1980 |
| The capture of the Hoche in 1798 | Kerrigan, P. M. | Article in Journal | | 1977 |
| The defences of Ireland, 1793-1815 | Kerrigan, P. M. | Article in Journal | | 1983 |
| The defences of the Shannon : Portumna to Athlone 1793-1815 | Kerrigan, P. M. | Article in Book | | 1980 |
| The Royal Gunpowder Mills, Ballincollig, Co. Cork | Kerrigan, P. M. | Article in Journal | | 1982 |
| The Shannonbridge fortifications | Kerrigan, P. M. | Article in Journal | | 1974 |